WebView

I’m developing a simple app based on WebView; inside my APP I include a zip file with the HTML code. My application (see attached file) works but when I push the “back” button my browser go back to the home page. It return to the home page also when i’m surfing on an the internet. I observed there are two event key=back when I push “back” button. Have you an idea for me? It’s very strange… Best regards.